package com.itheima.service.impl;

import com.itheima.mapper.DeptMapper;
import com.itheima.mapper.EmpMapper;
import com.itheima.pojo.Dept;
import com.itheima.pojo.DeptLog;
import com.itheima.service.DeptLogService;
import com.itheima.service.DeptService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class DeptServiceImpl implements DeptService {

    @Autowired
    private DeptMapper deptMapper;
    @Autowired
    private EmpMapper empMapper;
    @Autowired
    private DeptLogService deptLogService;


    @Override
    public List<Dept> list() {

        return deptMapper.list();
    }


    /**
     * 删除是否成功都要保存删除日志
     * @param id
     * @throws Exception
     */
    @Transactional(rollbackFor = Exception.class) // 所有异常都回滚
    //@Transactional // 默认运行时异常才回滚
    @Override
    public void delete(Integer id) throws Exception {
        try {
            deptMapper.deleteById(id);

            //int i = 1/0;
            if(true){
                throw new Exception();
            }

            empMapper.deleteByDeptId(id); // 删除该部门下的员工
        } finally {
            DeptLog deptLog = new DeptLog();
            deptLog.setCreateTime(LocalDateTime.now());
            deptLog.setDescription("执行了解散部门的操作, 此次解散的是"+id+"号部门");
            deptLogService.insert(deptLog);
        }
    }

    @Override
    public void add(Dept dept) {
        dept.setCreateTime(LocalDateTime.now());
        dept.setUpdateTime(LocalDateTime.now());
        deptMapper.insert(dept);

    }

    @Override
    public Dept get(Integer id) {
        Dept dept = deptMapper.getById(id);
        return dept;
    }

    @Override
    public void update(Dept dept) {
        Integer id = dept.getId();
        String name = dept.getName();
        deptMapper.updateName(id, name);
    }
}
